About: http://webisa.webdatacommons.org/209010206

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The speed of sound varies with such factors as temperature and relative humidity, and it may be necessary in some cases to calculate it based on these specific environmental factors.
http://www.w3.org/ns/prov#wasQuotedFrom	tvtechnology.com